Doppler-radar proximity fuse preferably for anti-aircraft missile

摘要

Air-speed-dependent reference signals are applied to a voltage-controlled phase comparator (6) via a Doppler signal amplitude threshold comparator (5). An AND gate (7) triggers a detonation signal via a flip-flop (12) and another AND gate (13) whose second input is supplied by a NOR gate (8) from the same three-bit register (11). Detonation is instigated only when the Doppler echo amplitude exceeds a predetermined level (with interruptions of less than 3 ms) continuously, a time-of-flight-dependent "detonation Doppler frequency" is not attained e.,g. three times in succession.